Remove @b1rdmania from OG share copy, strip mid/midi from song titles

- OG description no longer includes "by @b1rdmania" (only X share has it)
- Song titles now strip standalone "mid" and "midi" words

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/main.ts

@@ -644,6 +644,10 @@ class MotifApp {
       .replace(/[_]+/g, ' ')
       .replace(/[.]+/g, ' ')
       .replace(/\s+/g, ' ')
+      .trim()
+      // Strip standalone "mid" or "midi" words (case insensitive)
+      .replace(/\b(midi?)\b/gi, '')
+      .replace(/\s+/g, ' ')
       .trim();
     return this.titleCase(cleaned || 'Unknown');
   }

src/play.ts

@@ -53,6 +53,10 @@ function cleanLooseTitle(raw: string): string {
     .replace(/[_]+/g, ' ')
     .replace(/[.]+/g, ' ')
     .replace(/\s+/g, ' ')
+    .trim()
+    // Strip standalone "mid" or "midi" words
+    .replace(/\b(midi?)\b/gi, '')
+    .replace(/\s+/g, ' ')
     .trim();
 }